scholarly journals Assessment of the Northern Distribution Range of Selected Perkinsus Species in Eastern Oysters (Crassostrea virginica) and Hard Clams (Mercenaria mercenaria) with the Use of PCR-Based Detection Assays

2008 ◽  
Vol 94 (2) ◽  
pp. 410-422 ◽  
Author(s):  
Wolf T. Pecher ◽  
Mohammad R. Alavi ◽  
Eric J. Schott ◽  
José A. Fernandez-Robledo ◽  
Laura Roth ◽  
...  
Keyword(s):  
Crassostrea Virginica ◽  
Mercenaria Mercenaria ◽  
Distribution Range ◽  
Northern Distribution ◽  
Eastern Oysters ◽  
Hard Clams

Feeding behavior of eastern oysters Crassostrea virginica and hard clams Mercenaria mercenaria in shallow estuaries

2017 ◽  
Vol 567 ◽  
pp. 125-137 ◽  
Author(s):  
E Galimany ◽  
J Lunt ◽  
CJ Freeman ◽  
S Reed ◽  
I Segura-García ◽  
...  
Keyword(s):  
Feeding Behavior ◽  
Crassostrea Virginica ◽  
Mercenaria Mercenaria ◽  
Eastern Oysters ◽  
Hard Clams ◽  
Shallow Estuaries

scholarly journals The ability of macroalgae to mitigate the negative effects of ocean acidification on four species of North Atlantic bivalve

2018 ◽  
Author(s):  
Craig S. Young ◽  
Christopher J. Gobler
Keyword(s):  
Crassostrea Virginica ◽  
North Atlantic ◽  
Mercenaria Mercenaria ◽  
Argopecten Irradians ◽  
Negative Effects ◽  
Carbonate Chemistry ◽  
Green Macroalgae ◽  
Blue Mussels ◽  
Bay Scallops ◽  
Hard Clams

Abstract. Coastal ecosystems can experience acidification via upwelling, eutrophication, riverine discharge, and climate change. While the resulting increases in pCO2 can have deleterious effects on calcifying animals, this change in carbonate chemistry may benefit some marine autotrophs. Here, we report on experiments performed with North Atlantic populations of hard clams (Mercenaria mercenaria), eastern oysters (Crassostrea virginica), bay scallops (Argopecten irradians), and blue mussels (Mytilus edulis) grown with and without North Atlantic populations of the green macroalgae, Ulva. In 6 of 7 experiments, exposure to elevated pCO2 levels (~ 1,700 µatm) resulted in depressed shell- and/or tissue-based growth rates of bivalves compared to control conditions (p 

scholarly journals Oyster hatchery breakthrough of two HABs and potential effects on larval eastern oysters (Crassostrea virginica)

Harmful Algae ◽  
2021 ◽  
Vol 101 ◽  
pp. 101965
Author(s):  
Sarah K.D. Pease ◽  
Kimberly S. Reece ◽  
Jeffrey O'Brien ◽  
Patrice L.M. Hobbs ◽  
Juliette L. Smith
Keyword(s):  
Crassostrea Virginica ◽  
Eastern Oysters

Weather effects on intrahabitat movements of the western green lizard, Lacerta bilineata (Daudin, 1802), at its northern distribution range border: a radio-tracking study

2000 ◽  
Vol 78 (10) ◽  
pp. 1831-1839 ◽  
Author(s):  
P Sound ◽  
M Veith
Keyword(s):  
Activity Patterns ◽  
Strong Dependence ◽  
Weather Conditions ◽  
Distribution Range ◽  
Maximum Temperature ◽  
Second Phase ◽  
Northern Distribution ◽  
Radio Transmitters ◽  
Movement Parameters ◽  
Bad Weather

Daily activity patterns of male western green lizards, Lacerta bilineata (Daudin, 1802), at the edge of their northern distribution range in western Germany after the breeding season from June to October were recorded using implanted radio transmitters. Different activity indices discriminating between stimulation, duration, and length of movement were correlated with actual weather conditions (d0) and with weather conditions on the 2 previous days (d-1 and d-2). The lizards' dependence on weather showed two different phases throughout the study period. During the first period and in the period preceding a drastic change of weather in midsummer, weather had no significant influence on movement parameters. After that event, temperatures dropped and a strong dependence on weather of all movement parameters except those indicating displacements became apparent. Thresholds for 50% activity during this second phase were a maximum temperature of 17°C and a minimum humidity of 35%. Two days after periods of bad weather, the influence of weather conditions increased again. This can be explained by physiological deficits that require compensation during the period of marginal weather conditions prior to hibernation. Displacement movements were significantly longer than home-range movements and were neither triggered nor modulated by the weather. They must therefore represent activities such as patrolling territory boundaries.

Isolation of Naturally Occurring Enteroviruses from a Variety of Shellfish Species Residing in Long Island and New Jersey Marine Embayments

1980 ◽  
Vol 43 (2) ◽  
pp. 95-98 ◽  
Author(s):  
JAMES M. VAUGHN ◽  
EDWARD F. LANDRY ◽  
THOMAS J. VICALE ◽  
MARILYN C. DAHL
Keyword(s):  
New Jersey ◽  
Crassostrea Virginica ◽  
Long Island ◽  
Mercenaria Mercenaria ◽  
Naturally Occurring ◽  
Quality Of Water

Shellfish (Crassostrea virginica and Mercenaria mercenaria) and shellfish-raising waters from a variety of Long Island and New Jersey marine embayments were examined for the presence of human enteroviruses. Little difference in virological quality was noted between areas designated as being open or closed to shellfishing. Viral isolations could not be correlated with coliform counts from identical samples, indicating the need to re-evaluate the use of bacterial standards as indices of the overall sanitary quality of water and shellfish.

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